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Old 12-31-2016, 07:01 AM   #1
BigAlForsyth
 
Drives: 2012 ZL1 AGM, LLY Duramax,93formula
Join Date: Nov 2014
Location: Cartersville, GA
Posts: 42
ZL1 factory NPP exhaust packing blowout after mods??

So I was washing my car and looked into the tailpipe and thought there was a live animal in there!! Turns out the packing material in the NPP stock muffler is coming out. So I do have Forza controller and do keep it closed quite a bit. Defect or not designed to host that much power at WOT??
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2012 Ashen Gray ZL1 M6 LSXperts Stage III
-LSXperts Stage 3 cam, Kooks, Corsa, ported, HX, fans, pulleys, 850cc, Rotofab
2005 CCSB Silverado Duramax 4x4, studded, heads, tuned
1993 Pontiac Firebird "Thunderchicken"
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